Apparatus for assisting in drawing



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WILLIAM B. O. PEABODY, OF BOSTON, MASSACHUSETTS.

APPARATUS FOR ASSISTING IN DRAWING.

SPECIFICATION forming part of Letters Patent N0. 228,273, dated June 1, 1880.

Application filed March 1. 1880.

To all whom it may concern:

Be it known that I, WILLIAM B. O. PEA- BODY, of Boston, in the county of Suolk and State of Massachusetts, have invented new and valuable Improvements in Apparatus for Assisting in Drawing, of which the following is a specification.

My invention relates to an improvement the object of which is to enable persons unskilled in drawing' to draw with accuracy either from the flatL-t'. c., from pictures, engravings, or imprints of any kind upon iiat surfaces, or from the solidz'. e., from objects themselves; and it consists of a transparent sheet cross-sectioned by lines which are numbered or otherwise designated upon a mat or frame surrounding the said sheet, and lin a 'correspondingly numbered and scaled mat or frame adapted to be laid upon a sheet of drawingpaper, which can, by this means, be lined into squares exactly similar to those produced upon the transparent sheet by cross-sectioned lines, and of various auxiliary improvements, making part of this invention, all of which are for the'purpose of enabling the artist to accurately reproduce upon the drawing-paper that which he sees through the transparent sheet.

My invention is described in detail below, and illustrated in the accompanying drawings, in which- Figure l is a view of an open portfolio embodying the saine. Fig. 2 is a similar view, with a box, rulers, and certain supporting-feet removed. Fig. 3 shows the transparent sheet removed and set up in position for drawing a solid. Fig. 4 is a view of one of the feet. Fig.

o' is a view of the same with its parts sepaated.

Similar letters of reference indicate like arts.

a is a sheet of transparent material, such as elatine paper, ruled in equal squares, the .nes forming which are numbered or other- .'ise designated upon the frame a', which nolds and surrounds the transparent crosssectioned sheet.`

Beneath the transparent sheet a, lies a4 picire, and both picture and sheet lie upon the L1er side of one of the covers of the portfolio tud are held firmly in position by the flaps which extend fromthe ends of the portfolio (Model.)

sides, and are provided with buttons c', which receive the elastic cords c.

d is a mat provided with a scale corresponding with the lines 011 the transparent sheet a, and with numbers corresponding with the numbers on the mat or frame a.

Beneath the mat d is a sheet of drawingpaper, e, and both are held down and in place by the aps c, having buttons c and elastics o.

In Fig'. 2 the device is in position to allow of a copy being made upon the drawing-paper e of the picture beneath the transparent sheetv a. The method of making such a copy is as follows: By the aid of the scales upon the mat d draw, with an artists charcoal pencil, lines upon the drawing-paper e which will correspond .with the lines upon the transparent sheet, thus reproducing upon the drawing-paper each square that appears on the transparent sheet. When this is done it is only necessary to reproduce in the corresponding squares on the drawi1'1gpa1 er that which is seen in the copy through the transparent sheet, and thus secure an accurate copy or duplicate of the original.

W'hen the charcoal lines have served their purpose, if they have been drawn on good drawing-paper, they can be completely erased with a pocket-handkerchief; or, if it is desirable to sketch in water-color, they can be nearly erased before commencing, and left so faint as to be unobjectionable, but distinct enough to serve their purpose.

Held in place in the portfolio by means of bands f f, as shown, or by other suitable means, are foot-pieces g h, wooden and elastic rulers k l, and a box of artists7 materials, on.

rlhe object of the feet or foot-pieces is to support the transparent sheet when it is desired to draw in perspective. Each foot-support consists of two flat pieces, gh. (See Figs. 4 and 5.) The lower piece, g', has a cut or keri', g', sawed therein, of sufficient width to admit the piece h, and also the mat a of the transparent sheet. The upper' piece, 7L, has a cut, h', of sufficient width to admit the thickness of the piece g only. When the pieces are placed together, as shown in Figs. 4 and 5, they make a substantial support, as shown in Fin'. 3.

'he wooden ruler 7c is provided with one or IOO more eyeholes, 7c', which are countersunk for the purpose of securing an unvarying sight for perspective observation. The elastic ruler l, by the aid of rubber bands, serves to hold the ruler k in a tirm position, as on the back of a chair, upon a book, Src., so that a steady view can be had of a solid to be drawn by the aid of the transparent sheet a and mats a and d.

In using' my device to draw from the solid, the transparent sheet a is fixed in the feet g h, and the rulers 7c l placed in position, as shown in Fig. 3. The drawing-paper c and mat d are charcoal-lined, as before described, and may rein-ain in the portfolio or be placed in any convenient position. The object appears on the transparentcross-sectioned sheet as clearly as in the flat copy, and is as easily reproduced on the drawing-paper. The frame a is fur, uished with holes a, so that the sheet a may be suspended against a window for the purpose of sketching a landscape, if desired.

For copying,` pictures from books the sheet a can be secured over them by rubber elastics or twine without injury to the books.

If it is desired to enlarge the duplicate the scale on the mat d may be enlarged accordiug'ly.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is

l. In an apparatus for assisting in drawing, the combination of the ruled transparent sheet a, provided with the mat a', having figures or other designating-marks upon it correspond in g with the lines upon the transparent sheet, and the mat d, provided with a corresponding scale and set of figures and adapted to be laid upon a sheet of drawing-paper, for the purpose of enabling lines to be drawn thereupon corresponding` with the lines upon the transparent sheet, substantially as and for the purpose set forth.

2. In combination with the transparent sheet a and mats a and d, the portfolio b, provided with the fiaps c, having buttons c and elastics c", arranged and constructed substantially as and for the purpose described.

3. In combination with the transparent sheet a and frame a', the feet g h, provided with the slits or kerfs g h', arranged and construeted as and for the purpose described.

4. The combination ofthe ruler k, provided with one or more counter-sunk eye-l1oles,k, and the elastic ruler Z, for the purpose of enabling solids to be drawn by lneans of the transparent sheet, substantially as described.

WILLIAM B. 0. PEABODY.

W'itnesses:

HENRY W. WILLIAMS, GEORGE V. MALLoN. 

